R7NB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LN09

Receiver-side FT8 activity involving R7NB, decoded by SO8OO in southeastern Poland. 306 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 26 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-19.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 306 FT8 messages attributed to R7NB as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 80 m (21%) and 10 m (18%). Most decodes (71%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

306

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 24 80m · 63 40m · 141 20m · 23 10m · 55

First attributed message: 2026-06-07
Last attributed message: 2026-09-19 18:12 UTC

Observed FT8 message patterns

Attributed sample: 306 messages
Active dates: 26 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -16 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 96, strong (≥ -8 dB) 172.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with R7NB in decoded directed-looking exchanges:

KH8WW · American Samoa ×2 RI1FJZ · Franz Josef Land R6AC · European Russia 7Q5MLV · Malawi BH3MPM · China OH0ERF · Aland Islands PA3DZM · Netherlands R3PMI · European Russia R4RN · European Russia R9WCK · Asiatic Russia RA4HEX · European Russia RD7KW · European Russia

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to R7NB

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: LN09 · 245 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,378 km (approx.)
Last such locator decoded: 2026-09-19 18:10 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	R7NB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 18:12	160m	- / -	RA6ATZ	-11 / -	2	Partial capture
09-19 18:10	160m	+2 / -	RI1FJZ	- / -18	5	✓ Closing fragment
09-19 18:07	160m	- / -	RZ6BS	-1 / -	2	Partial capture
09-17 19:58	80m	- / -	R5BM	-7 / -	3	Partial capture
09-17 19:57	80m	-22 / -	TK4QP	- / -	2	Partial capture
09-17 19:54	80m	-15 / -	7Z1DH	- / -12	4	✓ Closing fragment
09-17 19:41	80m	-13 / -	7Z1DH	- / -15	9	Partial capture
09-17 19:38	80m	-3 / -	A41DV	- / -13	3	✓ Closing fragment
09-17 19:32	80m	-9 / -	7Z1DH	- / -	7	Partial capture
09-17 17:13	80m	-8 / -	RI1FJZ	- / -	5	Partial capture
09-17 17:00	160m	-6 / -	RI1FJZ	- / -	10	Partial capture
09-17 16:56	80m	-14 / -	RI1FJZ	- / -	3	Partial capture
09-14 15:37	80m	-17 / -	UA4FKT	-6 / -1	2	Partial capture
09-14 15:36	80m	-2 / -	KH8WW	- / -19	3	✓ Closing fragment
09-12 17:40	40m	- / 0	RD7KW	+5 / -	5	✓ Closing fragment
09-12 17:36	40m	-12 / +4	R4RN	-3 / +1	5	✓ Full exchange observed
09-12 17:35	40m	-8 / -	KH8WW	- / -17	5	✓ Closing fragment
09-10 03:19	40m	-4 / -	SQ100PKP	- / -	2	Partial capture
09-10 03:10	40m	0 / -	DL4YCA/P	- / -	8	Partial capture
09-08 20:58	40m	+5 / -	5N0YEN	- / -	27	Partial capture
09-08 20:42	40m	+4 / -	5N0YEN	- / -	2	Partial capture
09-08 20:38	40m	+1 / -	5N0YEN	- / -	4	Partial capture
09-03 18:23	160m	+2 / -	RI1FJL	- / -20	8	Partial capture
08-26 20:04	80m	-18 / -	RI1FJL	- / -	4	Partial capture
08-26 19:56	80m	-10 / -	RI1FJL	- / -	2	Partial capture
08-21 02:54	80m	-12 / -	HB0WR	- / -	6	Partial capture
08-20 19:30	80m	-12 / -	D2UY	- / -	2	Partial capture
08-20 19:22	80m	-5 / -	D2UY	- / -	4	Partial capture
08-20 06:19	20m	- / +2	R6AC	-12 / -	3	✓ Closing fragment
08-19 17:04	20m	- / -	IU2VBP	+4 / -	2	Partial capture
08-17 18:22	40m	-18 / -	RA3RFT/1	- / -12	2	Partial capture
08-12 16:42	80m	-8 / -	RI0FA	- / -21	4	✓ Closing fragment
08-06 18:18	40m	-13 / +8	RA3TVW	-12 / 0	3	Partial capture
08-06 18:13	40m	-14 / -	OH0ERF	- / -1	9	✓ Closing fragment
08-04 03:41	40m	-15 / -	5N0YEN	- / -	7	Partial capture
08-04 03:02	40m	-12 / -	RZ6L	- / -14	2	✓ Closing fragment
08-04 03:01	40m	0 / -	R9WCK	- / -9	2	✓ Closing fragment
07-26 15:00	40m	-10 / -	RI0BW	- / -	2	Partial capture
07-25 05:53	20m	- / -21	M1WLK	0 / -	2	Partial capture
07-23 18:55	40m	-6 / -	TK5K	- / -8	4	✓ Closing fragment
07-18 10:20	20m	-3 / -	<...>	- / -	7	Partial capture
07-13 19:17	40m	-16 / -	RI1PC	- / -14	4	✓ Closing fragment
07-09 21:08	40m	- / -16	PA3DZM	-20 / -	2	✓ Closing fragment
07-09 21:06	40m	-12 / -	BH3MPM	- / -17	2	✓ Closing fragment
07-09 20:54	40m	- / -	RA3TVW	-14 / -	2	Partial capture
07-09 20:51	40m	-9 / -	TJ1GD/P	- / -13	23	✓ Closing fragment
07-04 01:30	40m	-12 / -	YS3/PY8WW	- / -	2	Partial capture
07-03 03:30	40m	-13 / -	<...>	- / -	4	Partial capture
07-03 03:15	40m	-9 / -	<...>	- / -	12	Partial capture
07-03 03:06	40m	-4 / -	<...>	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

160m

UTC    dB Audio  Message
170245  -9 1937  RI1FJZ R7NB LN09 (x6)
180730  -5 2261  R7NB RZ6BS KN96 (x2)
181015  +6 1780  RI1FJZ R7NB LN09 (x4)
181200 -11 1899  R7NB RA6ATZ KN96
181215  +4 1583  RI1FJZ R7NB 73
181300 -11 1900  R7NB RA6ATZ KN96

80m

UTC    dB Audio  Message
194515  -9 1950  7Z1DH R7NB LN09 (x10)
195745 -24 1407  TK4QP R7NB LN09
195830  -9 2230  R7NB R5BM KO85
195845 -21 1408  TK4QP R7NB LN09
195900  -3 2231  R7NB R5BM KO85 (x2)

40m

UTC    dB Audio  Message
173615  -5 1412  KH8WW R7NB LN09
173630  -4 1937  R7NB R4RN +04 (x2)
173715 -13 1412  KH8WW R7NB R-17 (x2)
173815 -14 1413  R4RN R7NB R+01
173830  -1  465  R7NB R4RN RR73
173845  -9 1412  R4RN R7NB 73
173945 -12 1412  RM5C R7NB 73
174000 -10 1904  R7NB UB2FEK KO04
174000  +3  792  R7NB RD7KW KN75 (x5)

10m

UTC    dB Audio  Message
094545 -16 1489  CQ R7NB LN09
094845 -21 1486  HG1DRC R7NB +00
094945 -22 1485  RI1FJL R7NB LN09

20m

UTC    dB Audio  Message
102245  -5 2765  <...> R7NB LN09 (x5)
055215  -5 2779  PQ1I R7NB LN09
055300  +1 2973  R7NB M1WLK IO82 (x2)
055615 -11 2408  PQ1I R7NB LN09
170430  +8  936  R7NB IU2VBP JN45 (x2)
061845 -19 2360  <...> R7NB R-14
061930 -13 1887  R7NB R6AC LN05 (x3)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

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